An original method to determine complex refractive index of liquids by spectroscopic ellipsometry and illustrated applications

Operando probing of Li-insertion into LiMn2O4cathodes by spectroscopic ellipsometry

“…2c). The porosity of the lm has been modelled by using a partially empty top layer lled with the liquid electrolyte present in the electrochemical cell, whose optical properties have been measured using a prisma setup (as detailed elsewhere 45 ). On the other hand, the physical model uses Tauc-Lorentz parameterization of the optical constants of the LiMn 2 O 4 with four oscillators.…”

Roadmap of ellipsometric characterization of plasmonic nanoparticles

“…Due to the low volume fraction of NPs, the real part of the refractive index is similar to the refractive index of water. Indeed, with our ellipsometric cell 25 , the detection limit on imaginary part of refractive index is smaller than 10 -6 while the detection limit on the real part of refractive index remain of the order of 10 -3 . Thus, the presence of NPs in our suspension is only observe on the imaginary part of refractive index.…”

“…Suspensions are characterized by using a specific ellipsometric cell at 55°. The principle of this ellipsometric cell is given in references [25][26][27] .…”

Synthesis and study of γ-Fe2O3 and CoFe2O4 based ferrofluids by means of spectroscopic Mueller matrix ellipsometry

“…FeCl3 solution ([Fe(III)] = 2.12 mol/L, v = 12 mL) was added and the mixture was heated to boiling. Boiling The ellipsometric response of the ferrofluid has been studied in a dedicated prism cell devoted to the characterization of liquids [1,20]. The NPs solution is introduced between a silicon wafer and a silica prism.…”

“…Generally, SE is applied to characterize thin film structures at the air-solid interface and sometimes applied to study phenomena at liquid-solid interfaces. In our previous work [1], we presented several results illustrating the feasibility of liquid characterization by SE. This work is the extension of these first results applied to ferrofluids that are non-standards liquids due to their magneto-induced anisotropic optical properties [2] investigated here with MM approach.…”